/Engine/Plugins/MeshPainting/Source/MeshPaintEditorMode/Public/MeshPaintModeHelpers.h
Helper function to import Vertex Colors from a Texture to the specified MeshComponent (makes use of SImportVertexColorsOptions Widget)
void ImportVertexColorsFromTexture ( [UMeshComponent](API\Runtime\Engine\Components\UMeshComponent) * MeshComponent )